# Fibonacci numbers module

def fib(n):   # write Fibonacci series up to n
  a, b = 0, 1
  while b < n:
    print(b, end=' ')
    a, b = b, a+b
  print()

def fib2(n): # return Fibonacci series up to n
  result = []
  a, b = 0, 1
  while b < n:
    result.append(b)
    a, b = b, a+b
  return result

